<template>
  <view>
    <view class="search-box">
    <!-- <my-search :bgcolor="'pink'" :radius="10"></my-search> -->
    <my-search @click="gotoSearch"></my-search>
    </view>
    <view class="scroll-view-container">
      <!-- 左侧滑动区域 -->
      <scroll-view scroll-y :style="{height: wh+'px'}" class="lscroll">
        <block v-for="(item,i) in cateList" :key="i">
          <view :class="['left-scroll-view-item',i===active?'active':'']" @click="activeChanged(i)">{{item.cat_name}}</view>
          </block>
        
      </scroll-view>
      <!-- 右侧滑动区域 -->
      <scroll-view scroll-y :style="{height: wh+'px'}"class="rscroll" :scroll-top="scrollTop">
        <view class="cate-lv2" v-for="( item2 , i2 ) in cateLevel2" :key="i2">
          <!-- 二级分类的标题 -->
        <view class="cate-lv2-title">/{{item2.cat_name}}/</view>
        <!-- 三级分类 -->
        <view class="cate-lv3-list">
          <!-- 三级分类项 -->
          <view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
           <image :src="item3.cat_icon.replace('dev','web').replace('ugo','hmugo')"></image>
            <text>{{item3.cat_name}}</text>
          </view>
        </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  // 导入自己封装的 mixin 模块
  import badgeMix from '@/mixins/tabbar-badge.js'
  export default {
    // 将 badgeMix 混入到当前的页面中进行使用
     mixins: [badgeMix],
    data() {
      return {
        wh:0,
        cateList:[],
        active:0,
        cateLevel2:[],
        scrollTop:0
      }
    },
    onLoad() {
      const sysInfo=uni.getSystemInfoSync()
      this.wh=sysInfo.windowHeight-50
      this.getcateList()
    },
    methods: {
       async getcateList(){
         const {data:res}= await uni.$http.get('/api/public/v1/categories')
         if(res.meta.status!==200) return uni.$showMsg()
         this.cateList=res.message 
         // console.log(this.cateList)
         this.cateLevel2=res.message[0].children
         
       },
       activeChanged(i){
         this.active=i
         this.cateLevel2=this.cateList[i].children
         this.scrollTop= this.scrollTop===0 ?  1 : 0
       },
       gotoGoodsList(item){
         uni.navigateTo({
           url:'/subpkg/goods_list/goods_list?cid='+item.cat_id
         })
       },
       gotoSearch(){
         uni.navigateTo({
           url:'/subpkg/search/search'
         })
       }
    }
  }
</script>

<style lang="scss">
  .search-box{
    position: sticky;
    top:0;
    z-index: 999;
  }
.scroll-view-container{
  display: flex;
}
.lscroll{
  width: 120px;
  .left-scroll-view-item {
    background-color: #F7F7F7;
    line-height: 60px;
    text-align: center;
    font-size: 12px;
    &.active{
      background-color: #FFFFFF;
     position: relative;
      &::before{
        content: '';
        display: block;
        width: 3px;
        height: 30px;
        background-color: #C00000;
        position: absolute;
        top: 50%;
        left: 0;
        transform: translateY(-50%);
      }
    }
  } 
}
.rscroll{
  background-color: #FFFFFF;
}
.cate-lv2-title{
  font-size: 12px;
  font-weight: bold;
  text-align: center;
  padding: 15px 0;
}
.cate-lv3-list{
  display: flex;
  flex-wrap: wrap;
   
  .cate-lv3-item{
    width: 33.33%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
    image{
      width: 60px;
      height: 60px;
    }
    text{
      font-size: 12px;
    }
  }
}

</style>
